mbedmicro/mbed — pull request #684 by Sissors (2014-11-11 19:35:30+00:00)
Title: [HAL][KSDK] Fixed ACK/NACK received inverted (https://github.com/mbedmicro/mbed/issues/661)

As reported by Geremia G
(http://developer.mbed.org/forum/bugs-suggestions/topic/5220/)

The FXO still reported some data back, which makes little sense but is most likely the reason it wasn't found during testing.